butt-kicker

and ass-kicker

n. someone or something capable of defeating or surpassing all others. That idea is a real butt-kicker. He is an ass-kicker, but he at least rewards us for putting up with him.

Common Names:

Name	Pronounced	Usage
Wayland	WAY-lənd, WAY-lən	English
Felipe	fe-LEE-pe (Spanish)	Spanish, Portuguese (Brazilian)
Lys	-	Frisian
Valerie	VAL-ə-ree (English), VAH-le-ree (German)	English, German, Czech
Ittai	-	Biblical
Maredudd	mah-RE-deeth	Welsh